1 詳細
Development of fluorescent microgel thermometers based on thermo-responsive polymers and their modulation of sensitive range
K. Iwai, Y. Matsumura, S. Uchiyama, A. P. de Silva
J. Mater. Chem., 2005, 15, 2796-2800
■ Abstract
Fluorescent molecular thermometers based on thermo-responsive linear polymer molecules such as poly(N-isopropylacrylamide)(PNIPAM) labelled with a polarity-responsive fluorescent molecule benzofurazan (BD) are the most sensitive known.
Thermo-responsive PNIPAM and some related polymer microgel particles labelled with BD by emulsion polymerization have been prepared and their fluorescence properties in water as fluorescent thermometers studied.
All the cross-linked polymer microgel particles dispersed in water fluoresce strongly as soon as each threshold temperature is exceeded.
The nine kinds of microgel dispersion developed in this work thoroughly cover the sensitivity range from 18 to 47 degree Celsius.
They are not only more sensitive than the previous fluorescent molecular thermometers based on other principles but also highly reproducible in their behaviour.
■ 内容
感熱応答性高分子を利用した蛍光性温度センサーが，ナノゲル状でも機能を示すことを明らかにした論文です．
今までは，２次元のリニアポリマーとして蛍光性温度センサーの機能を議論してきましたが，今回初めて直径 100-300 nm 程度（乾燥状態）のナノゲル微粒子として温度センサーの機能を確認しました．
ナノゲル微粒子はリニアポリマーと比較して，可視化が容易であり耐久性に優れているという利点があります．
■ ひとこと
正直言って何もしていないに等しい論文です．
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